DB Engine :: Table Triggers On Read-only Secondary Replica?

Jun 30, 2015

I was hoping for some information regarding table triggers. We have databases that are part of an AlwaysOn availability group on SQL Server 2012. Some of the tables have table triggers defined. There are both types of triggers, INSTEAD OF and AFTER INSERT, etc.

From my understanding of how secondary read-only replicas work, I am assuming that these triggers have no impact at all when the database is a read-only secondary replica and they only fire when the database is the primary read-write database.

However, after doing a search on the internet, I have not been able to find a definitive source of information.

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SQL Server Admin 2014 :: Read Only On Secondary Replica

May 5, 2014

Assume if i have a connection(Application intent readonly) starts with reading, writing and again reading data for a report. how it will works in SQL 2014 Always availability on?

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SQL 2012 :: Failover On 2 Servers AlwaysOn AG With Read-only Secondary Replica

Mar 28, 2014

What happens when an automatic failover occurs, in a two server AlwaysOn Availability Group configuration, where the secondary replica is configured as read-only?

Will it only allow read-only connections, or will it become read-write and can accept INSERT, UPDATES and DELETES when assigned the new role as Primary?

Is it correct that adding a third server/node, that just acts as passive and should be used for automatic failover, to support true HADR, would NOT need another license .. and that licenses would only be required for the previous Primary and Secondary (Read-Only) replicas?

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SQL Server Admin 2014 :: Can Have Secondary Replica As Read / Write Mode?

Oct 14, 2014

We have a reporting database which is refreshed daily from prod backup and later creating new tables/views/indexes as part of the refresh job. Is there a better approach we can implement in sql 2012/2014 for this scenario since we are planning to migrate to sql2014.

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SQL Server Admin 2014 :: Grant User Read Access To Secondary Replica?

Sep 15, 2015

I have 3 servers taking part in an AlwaysOn AG.

I want to grant a user READ access to only one replica, and certainly not to the principle.

How do I go about doing this?

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SQL 2012 :: Backup On Primary Replica In Case Of Secondary Replica Is Down

Jun 9, 2014

I have 2 SQL Server replicas configured on SQL Server 2012 AlwaysOn. e.g. SQL1 & SQL2.

I have configured backup job on both SQL Server with the following statement. and the job occurs every 10 minutes.

•declare @DBNAME sysname,@sqlstr varchar(500)
set @DBNAME = 'dba'
IF (sys.fn_hadr_backup_is_preferred_replica(@DBNAME)=0)
BEGIN
--Select 'This is not the preferred replica, exiting with success';

[Code] ...

I turned off SQL2 for Windows maintenance. So there is only SQL1 is online. Afterwards. I checked the backup folder and didn't see any new backup files was created after SQL2 was offline. I rerun the job. It still doesn't backup database on the Primary Replica. Then I searched on SQL Server Book online. It says

Prefer Secondary

Specifies that backups should occur on a secondary replica except when the primary replica is the only replica online. In that case, the backup should occur on the primary replica. This is the default option.

According to what it says, it should backup on the Primary Replica.

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SQL 2012 :: Secondary Replica In AG

May 27, 2015

in my secondary server the database which is in restoring state , when i checked in always on dash board "This secondary database is not joined to the availability group" ,

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SSIS CDC Components On Asynchronous Secondary Replica

Jan 15, 2015

MSDN states the following on: Readable Secondary Replicas (AlwaysOn Availability Groups) for SQL Server 2014:

Limitations and Restrictions:

Change tracking and change data capture are not supported on secondary databases that belong to a readable secondary replica:

Change tracking is explicitly disabled on secondary databases.
Change data capture can be enabled on a secondary database, but this is not supported.

This confuses me: You can not track the changes. However you can enable CDC?

The scenario I am trying to achieve is to use SSIS CDC components on an asynchronous secondary replica. Is this possible? If not what would be other viable approaches?

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SQL 2012 :: Dump Every 1 Minute In Secondary Replica?

Jun 9, 2015

SQL is generating dump every 1 min with error

EXCEPTION_ACCESS_VIOLATION reading address 0000000000000020 at

Server is running SP2 CU2.

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Replication :: Remove Secondary Available Replica From 2012?

Oct 14, 2015

Environment:-

Windows 2012 R2,
SQL 2012 (Primary Replica)
SQL 2012 (Seondary Replica)
SQL 2012 (Secondary Replica over WAN site)

There are database replicating on three SQL servers. WAN line is having performance issue because of limited bandwidth I have to remove SQL secondary replica over WAN site temporarily and add it again later when the WAN line is upgraded with between bandwidth What is the best practice to remove secondary replica and replicating database and add later from SQL management studio without interruptions on databases?

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SQL 2012 :: AlwaysOn Secondary Replica - Resolving State

May 21, 2013

I have an AlwaysOn Availability group configured between 2 nodes (Synchronous)

Automatic failover was working fine until recently

I can failover between the nodes manually but automatic failover doesn't seem to be working. In my earlier test, I would shut down the SQL Service on the primary and within seconds, the secondary replica would take over. Recently I have performed the same test and the secondary replica enters the resolving state and the DB in unavailable.

I have tried everything here: [URL] ....

The only change I made was changing the availability mode from Synchronous to Asynchronous - Could that be the cause?

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SQL 2012 :: Clustering AlwaysOn - Primary And Secondary Replica

Apr 11, 2014

Looking for info on ole/requirement of primary and secondary replica under SQL Server 2012 AlwaysOn.

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SQL Server Admin 2014 :: Cannot Failover AG To Secondary Replica

Aug 11, 2015

We are not able to failover the AG to secondary replica. The process gets timed out and AG goes to resolving mode. Had to reboot the box in order to switch the AG back to primary node. We even rebuilt the whole AG from scratch but the issue remains.

Failed to bring availability group 'xxxx' online. The operation timed out. Verify that the local Windows Server Failover Clustering (WSFC) node is online. Then verify that the availability group resource exists in the WSFC cluster. If the problem persists, you might need to drop the availability group and create it again. [SQLSTATE 42000] (Error 41131). The step failed.

Not much information is available in the logs.

Version : sql server 2014 sp1

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Recovery :: Set Synchronization Time From Primary To Secondary Replica

Sep 28, 2015

As per our client requirement we want to set synchronization time from primary replica to secondary replica after 20 minutes. Is it possible in MSSQL AlwaysOn Availability Groups in SQL Server 2012?

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SQL 2012 :: VLFs On AlwaysOn Primary Replica After Log Backup From Secondary

Aug 6, 2014

I was working on a job to send me info each morning about database file free space and was noticing some odd things when looking at the log file VLFs for one of my databases in an AlwaysOn availability group.When I run DBCC LOGINFO on the secondary replica for this database, I get what I expect and most VLFs have a status of 0 (indicating the VLFs are reusable or unused). When I run DBCC LOGINFO on the primary replica, all of the VLFs have a status of 2 (active or recoverable).

Since log backups on the secondary replica in AlwaysOn still truncate the log in the primary replica, I would expect that the VLFs in the primary replica would also be mostly in a reusable or unused state. My log file sizes are the same size on each server and my backups are completing successfully. what might be causing the VLFs on the primary replica to have a status of 2 in DBCC LOGINFO when taking log backups from the secondary replica?

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SQL Server Admin 2014 :: Joining DB On Secondary Replica Resulted In Error

Oct 12, 2015

I am working on adding DBs to the AG but for some reason I am getting this error.

"Joining DB on secondary replica resulted in error"

Msg: The remote copy of the database is not recovered far enough to enable DB mirroring or to join AG. Missing log records have to be applied to the remote DB by restoring the current log backups" Which I did. I took the log backup of DB1, restored it on DB2 with no recovery, but still I am getting the same error.

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SQL Server Admin 2014 :: How To Exit From Initializing / Recovery Pending Database In Secondary Replica

Sep 12, 2015

We have 2 switch between primary and secondary this morning.

after that one database in secondary went to "initializing / recovery pending".

How can i exit from this situation ?

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SQL 2012 :: Permissions For Read Only Replica?

Jul 2, 2014

I have an availability group with read only replicas, readable secondary set to yes and allow all incoming connections. I have also configured the read only routing (at least I'm pretty sure this is correct).

If I login to SSMS with a user in the sysadmin role I can view the objects in the read only replica database. If I login with a user in the public role I'm unable to get past the obvious error:

"The database databaseA is not accessbile. (ObjectExplorer)"

I've also tried adding the "ApplicationIntent=ReadOnly" option.

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Application With AlwaysOn Read Only Replica In Synchronous Commit

Mar 8, 2015

I am trying to implement a read only replica to move much of the data read for an application to the secondary replica. Initially I had the the primary and secondary set to asynchronous commit. QA brought up an issue with creating entities from the application because after the creation of an entity the application turns around and repopulates the entire aggregate object. Well it seems that the application was reading the secondary replica before the data had been committed. Although I understand the issues that synchronous commits can cause, I went ahead and made the change as I expected it to fix the issue. After changing the primary replica to synchronous we still had the error, so I also changed the secondary although that makes no since, but the issue remains.

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SQL Server Admin 2014 :: AlwaysOn Read-Only Replica Routing

Jun 22, 2015

Having an annoying AG/AO problem with the read only routing side of it.

Let me give some specifics first:

2 SQL Server Instances, Not Clustered.
Availability Group is named 'Ireland'

There is a primary Replica and a Secondary Replica, named:

'IrelandPrimary' and 'IrelandSecondary'

There is a listener configured with the name 'ListenIreland' on Port 14330 (the two 3's are correct)

Read Only Routing URLS are configured as follows:
IrelandPrimary tcp://Ireland.dom.local:49891ALL
IrelandSecondary tcp://Ireland.dom.local:49841ALL

So now my problem:

When I try to connect using the ApplicationIntent=Readonly; or even using -K ReadONLY in sqlcmd I get the error telling me that my connection was actively refused.

This is connecting to the Listener, not the instance itself - that works fine. I'm at a bit of a loss now.

To explain what I am trying to achieve is a for a connection to be redirected to the secondary replica when its set for read-intent.

I've just noticed that it only fails when I specify ApplicationIntent=ReadOnly; If I omit the Intent It connects to the read-write database instead.

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SQL Server Admin 2014 :: AlwaysOn Read Only Replica - SP Execution Error

Oct 8, 2015

We have always on setup in our environment with read only replica. The primary database has 2 schema one is a dbo and other xyz. We have some store procs created in dbo schema and xyz schema. These store procs are being used by SSRS reports to retrieve the data (select only) no data changes will be made.

when we run the store proc from the read only server the storeprocs in the dbo schema run fine but xyz schema are failing with the message saying failed to update the database as this is a read only...

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DB Engine :: How To Change Location Of Secondary Data File

Nov 9, 2015

I added a secondary data file to TEMPdb yesterday and gave it a wrong location by mistake. If I try to change the location, then I am getting an error now. I think that is because TEMPdb is in use and that is why I cant change it's secondary file's location. Do I need to take TempDB offline and then change the secondary file's location??

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SQL Server Admin 2014 :: Read Only DNS Listener Failover Automation From Primary To Secondary

Mar 23, 2015

I have a 2 node cluster with 2 standalone 2k14 instances having alwayson setup. As per client requirement we have created a client access point with a cname alias in dns to connect to secondary replica. Now, everytime whenerver the roles switch over one has to manually move this resource from the previous secondary node to the new secondary node. This is tedious, and should not be done manually either, so I am looking for a way to automate it so that as soon as the role switches over, the resource group after some time should also switch over to the current secondary.

Env details
xa (current primary)
y2a (secondary)

client access point (resource group): aglreadtest

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DB Engine :: DB Autogrowth Turned On In Secondary Data File Still 0% Internal Free Space

Oct 30, 2015

Today we received an issue on an application database on internal free space on the DB is 0% that was designed with as below

name    fileid    filename    filegroup    size    maxsize    growth    usage
XX    1    I:DataMSSQL.1MSSQLDataNew XX.mdf    PRIMARY    68140032 KB    Unlimited    0 KB    data only
XX_log    2    I:DataMSSQL.1MSSQLDataNew XX_log.LDF    NULL    1050112 KB    2147483648 KB    102400 KB    log only
XX_2    3    I:DataMSSQL.1MSSQLDataNew XX_2.ndf    PRIMARY    15458304 KB    Unlimited    0 KB    data only
XX_3    4    I:DataMSSQL.1MSSQLDataNew XX_3.ndf    PRIMARY    13186048 KB    Unlimited    0 KB    data only
XX_4    5    I:DataMSSQL.1MSSQLDataNew XX_4.ndf    PRIMARY    19570688 KB    Unlimited    204800 KB    data only
XX_5    6    I:DataMSSQL.1MSSQLDataNew XX_5.ndf    PRIMARY    19591168 KB    Unlimited    204800 KB    data only

2 of the secondary data files had its autogrowth enabled to unrestricted with 200MB and 3 of the data files including primary had its Autogowth turned OFF. Application use is complaining that there is no internal freespace on the DB.

What fails to understand us is that when the Auto growth was already TURNED OFF on 3 data files ( 1 primary and 2 secondary ) still why was the application trying to increase the space on the .mdf and .ndf files; as well when the Autogrowth is TURNED ON on 2 of the secondary data files, why was the DB not able to expand these file groups when the autogrowth is already turned off on 3 of its  other files.

What more data i need to ensure i submit an analysis to this.

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SQL 2012 :: Existing Replica MDF File Size Increased In Size Than New Replica Install

Apr 14, 2015

Here are my scenarios:

We have an application with replicated environment setup on sql server 2012 . Users will have a replica on their machines and they will replicate to the master database. It has 3 subscriptions subscribed to the publications on the master db.

1) We set up a replica(which uses sql server 2012) on a machine with no sql server on it. After the initial synchronization(used replmerge tool) the mdf file has grown to 33gigs and ldf has grown to 41 gigs. I went to sql server management studion . Right click and checked the properties of the local database. over all size is around 84 gb with little empty free space available.

2) We set up a replica(which uses sql server 2012) on a machine with sql server 2008 on it. After the initial synchronization(used replmerge tool) the mdf file has grown to 49 gigs and ldf has grown to 41 gigs. I went to sql server management studio , Right click and checked the properties of the local database. over all size is around 90 gb with 16 gb free space available.

3) We set up a replica(which uses sql server 2012) on a machine with sql server 2012 on it. We have dropped the local database and recreated the local db and did the initial synchronization using replmerge tool. The mdf file has grown to 49 gigs and ldf has grown to 41 gigs. I went to sql server management studio , Right click and checked the properties of the local database. over all size is around 90 gb with 16 gb free space available.

Why it is allocating the space differently? This is effecting our initial replica set up times.

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DB Engine :: GRANT Read-only Permission After A Restore

Jun 19, 2015

I'm trying to grant a read-only permission in sql 2014 after a restore and I wanted to find out what it is in SQL 20114?

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DB Engine :: READ Operations And Transaction Logs

Sep 19, 2015

I actually am just looking for some supporting documentation on some facets of SQL Server.As far as I have always known, when anyone does a READ from a SQL Server database (SELCT * from <TABLE>), SQL Server does not create a log record...since there's no data or database structure being modified. A colleague is under the impression READ's are logged operations.

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Multiple Triggers On A Table Or Encapsulated Triggers

May 12, 2008

This isn€™t an problem as such, it€™s more of a debate.

If a table needs a number of update triggers which do differing tasks, should these triggers be separated out or encapsulated into one all encompassing trigger. Speaking in terms of performance, it doesn€™t make much of an improvement doing either depending upon the tasks performed. I was wondering in terms of maintenance and best practice etc. My view is that if the triggers do totally differing tasks they should be a trigger each on their own.

www.handleysonline.com

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DB Engine :: Read Unicode Data From Server 2008

Oct 18, 2015

way to read data from database already stored as question marks .that because by mistake i insert the data "arabic" from  the VS as sqltext but the field in the database is nvarchar now i want to get the data back.

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SQL 2012 :: How To Transfer Login To Secondary Server And Assign Same Permission To Secondary DB

Jan 24, 2015

i have created a new login in primary server and provided dbowner permission to primary db.how do i transfer this login to secondary server and assign the same permission to secondary db ?

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DB Engine :: Create Read-only Database From Production And Restore On Different Server

Jun 4, 2015

We have a production 2012 R2 SQL server that is not part of a domain. I have a database called CSSDC. I need to backup this database and make the BAK file available to a user on a different SQL server. Security is a concern. In order for this user to restore the database, they will have to be in the fixed server role sysadmins. I know I am going to have to use the Move with replace for the filegroups for the restore. Once the database is restored it will have to be altered to read-only. I would also like to remove the existing security and only have this new user access the read-only database.

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Table Not Involved In Replica Throws Error When Write Data In It

Aug 8, 2007

Hi everybody.
I have a merge replication scenario between 2 servers.
Everything is OK when I write data in UP server (the server which does the replication).
But when I write data in any tables in the DOWN server throws an error saying that the table where I'm trying to insert data is updating or inicializating for merge replica. This table, where the error throws, isn't involved in the replica. In fact, that table is not involved in none replication.
Can you help me?
Thanks in advance

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Log Shipping Secondary DB (How We Can Take Backup Of Secondary DB)

Jan 14, 2008

Hello

We have set up Log shipping between Primary and Secondary DB. The secondary DB is right now option: Standby/Read-Only. I can not take Backup of Secondary DB now.


Shall we disable Log shipping and change the DB Option to Multi-user mode and take backup? or any different method, without disabling log shipping?

please advice. Thanks in advance.

Jay

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